<html>
    <head>
        <meta charset="utf-8">
        <title>Hello world</title>
    </head>
    <body>
        <p class="myclass">Apple</p>
        <p class="myclass">Pear</p>
        <p id="myId">Banana</p>
        <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
       
    </body>
    <script>
        // var p1 = d3.selectAll(".myclass")
        // p1.style("color","red")
        //d3.select("#myId").append("p").text("append e element")
        d3.select("#myId").remove()
    </script>
</html>